--- /dev/null
+/*
+ * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include "xfs.h"
+
+#include "xfs_inum.h"
+#include "xfs_log.h"
+#include "xfs_clnt.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_dir.h"
+#include "xfs_dir2.h"
+#include "xfs_alloc.h"
+#include "xfs_dmapi.h"
+#include "xfs_quota.h"
+#include "xfs_mount.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_ialloc_btree.h"
+#include "xfs_btree.h"
+#include "xfs_ialloc.h"
+#include "xfs_attr_sf.h"
+#include "xfs_dir_sf.h"
+#include "xfs_dir2_sf.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_bmap.h"
+#include "xfs_bit.h"
+#include "xfs_rtalloc.h"
+#include "xfs_error.h"
+#include "xfs_itable.h"
+#include "xfs_rw.h"
+#include "xfs_acl.h"
+#include "xfs_cap.h"
+#include "xfs_mac.h"
+#include "xfs_attr.h"
+#include "xfs_buf_item.h"
+#include "xfs_utils.h"
+#include "xfs_version.h"
+
+#include <linux/namei.h>
+#include <linux/init.h>
+#include <linux/mount.h>
+#include <linux/suspend.h>
+#include <linux/writeback.h>
+
+STATIC struct quotactl_ops linvfs_qops;
+STATIC struct super_operations linvfs_sops;
+STATIC struct export_operations linvfs_export_ops;
+STATIC kmem_cache_t * linvfs_inode_cachep;
+
+STATIC struct xfs_mount_args *
+xfs_args_allocate(
+ struct super_block *sb)
+{
+ struct xfs_mount_args *args;
+
+ args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
+ args->logbufs = args->logbufsize = -1;
+ strncpy(args->fsname, sb->s_id, MAXNAMELEN);
+
+ /* Copy the already-parsed mount(2) flags we're interested in */
+ if (sb->s_flags & MS_NOATIME)
+ args->flags |= XFSMNT_NOATIME;
+
+ /* Default to 32 bit inodes on Linux all the time */
+ args->flags |= XFSMNT_32BITINODES;
+
+ return args;
+}
+
+__uint64_t
+xfs_max_file_offset(
+ unsigned int blockshift)
+{
+ unsigned int pagefactor = 1;
+ unsigned int bitshift = BITS_PER_LONG - 1;
+
+ /* Figure out maximum filesize, on Linux this can depend on
+ * the filesystem blocksize (on 32 bit platforms).
+ * __block_prepare_write does this in an [unsigned] long...
+ * page->index << (PAGE_CACHE_SHIFT - bbits)
+ * So, for page sized blocks (4K on 32 bit platforms),
+ * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
+ * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
+ * but for smaller blocksizes it is less (bbits = log2 bsize).
+ * Note1: get_block_t takes a long (implicit cast from above)
+ * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
+ * can optionally convert the [unsigned] long from above into
+ * an [unsigned] long long.
+ */
+
+#if BITS_PER_LONG == 32
+# if defined(CONFIG_LBD)
+ ASSERT(sizeof(sector_t) == 8);
+ pagefactor = PAGE_CACHE_SIZE;
+ bitshift = BITS_PER_LONG;
+# else
+ pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
+# endif
+#endif
+
+ return (((__uint64_t)pagefactor) << bitshift) - 1;
+}
+
+STATIC __inline__ void
+xfs_set_inodeops(
+ struct inode *inode)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+
+ if (vp->v_type == VNON) {
+ make_bad_inode(inode);
+ } else if (S_ISREG(inode->i_mode)) {
+ inode->i_op = &linvfs_file_inode_operations;
+ inode->i_fop = &linvfs_file_operations;
+ inode->i_mapping->a_ops = &linvfs_aops;
+ } else if (S_ISDIR(inode->i_mode)) {
+ inode->i_op = &linvfs_dir_inode_operations;
+ inode->i_fop = &linvfs_dir_operations;
+ } else if (S_ISLNK(inode->i_mode)) {
+ inode->i_op = &linvfs_symlink_inode_operations;
+ if (inode->i_blocks)
+ inode->i_mapping->a_ops = &linvfs_aops;
+ } else {
+ inode->i_op = &linvfs_file_inode_operations;
+ init_special_inode(inode, inode->i_mode, inode->i_rdev);
+ }
+}
+
+STATIC __inline__ void
+xfs_revalidate_inode(
+ xfs_mount_t *mp,
+ vnode_t *vp,
+ xfs_inode_t *ip)
+{
+ struct inode *inode = LINVFS_GET_IP(vp);
+
+ inode->i_mode = (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
+ inode->i_nlink = ip->i_d.di_nlink;
+ inode->i_uid = ip->i_d.di_uid;
+ inode->i_gid = ip->i_d.di_gid;
+ if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
+ inode->i_rdev = 0;
+ } else {
+ xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
+ inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
+ }
+ inode->i_blksize = PAGE_CACHE_SIZE;
+ inode->i_generation = ip->i_d.di_gen;
+ i_size_write(inode, ip->i_d.di_size);
+ inode->i_blocks =
+ XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
+ inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
+ inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
+ inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
+ inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
+ inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
+ inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
+ if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
+ inode->i_flags |= S_IMMUTABLE;
+ else
+ inode->i_flags &= ~S_IMMUTABLE;
+ if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
+ inode->i_flags |= S_APPEND;
+ else
+ inode->i_flags &= ~S_APPEND;
+ if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
+ inode->i_flags |= S_SYNC;
+ else
+ inode->i_flags &= ~S_SYNC;
+ if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
+ inode->i_flags |= S_NOATIME;
+ else
+ inode->i_flags &= ~S_NOATIME;
+ vp->v_flag &= ~VMODIFIED;
+}
+
+void
+xfs_initialize_vnode(
+ bhv_desc_t *bdp,
+ vnode_t *vp,
+ bhv_desc_t *inode_bhv,
+ int unlock)
+{
+ xfs_inode_t *ip = XFS_BHVTOI(inode_bhv);
+ struct inode *inode = LINVFS_GET_IP(vp);
+
+ if (!inode_bhv->bd_vobj) {
+ vp->v_vfsp = bhvtovfs(bdp);
+ bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
+ bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
+ }
+
+ vp->v_type = IFTOVT(ip->i_d.di_mode);
+
+ /* Have we been called during the new inode create process,
+ * in which case we are too early to fill in the Linux inode.
+ */
+ if (vp->v_type == VNON)
+ return;
+
+ xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
+
+ /* For new inodes we need to set the ops vectors,
+ * and unlock the inode.
+ */
+ if (unlock && (inode->i_state & I_NEW)) {
+ xfs_set_inodeops(inode);
+ unlock_new_inode(inode);
+ }
+}
+
+void
+xfs_flush_inode(
+ xfs_inode_t *ip)
+{
+ struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip));
+
+ filemap_flush(inode->i_mapping);
+}
+
+void
+xfs_flush_device(
+ xfs_inode_t *ip)
+{
+ sync_blockdev(XFS_ITOV(ip)->v_vfsp->vfs_super->s_bdev);
+ xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
+}
+
+int
+xfs_blkdev_get(
+ xfs_mount_t *mp,
+ const char *name,
+ struct block_device **bdevp)
+{
+ int error = 0;
+
+ *bdevp = open_bdev_excl(name, 0, mp);
+ if (IS_ERR(*bdevp)) {
+ error = PTR_ERR(*bdevp);
+ printk("XFS: Invalid device [%s], error=%d\n", name, error);
+ }
+
+ return -error;
+}
+
+void
+xfs_blkdev_put(
+ struct block_device *bdev)
+{
+ if (bdev)
+ close_bdev_excl(bdev);
+}
+
+
+STATIC struct inode *
+linvfs_alloc_inode(
+ struct super_block *sb)
+{
+ vnode_t *vp;
+
+ vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_cachep,
+ kmem_flags_convert(KM_SLEEP));
+ if (!vp)
+ return NULL;
+ return LINVFS_GET_IP(vp);
+}
+
+STATIC void
+linvfs_destroy_inode(
+ struct inode *inode)
+{
+ kmem_cache_free(linvfs_inode_cachep, LINVFS_GET_VP(inode));
+}
+
+STATIC void
+init_once(
+ void *data,
+ kmem_cache_t *cachep,
+ unsigned long flags)
+{
+ vnode_t *vp = (vnode_t *)data;
+
+ if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+ SLAB_CTOR_CONSTRUCTOR)
+ inode_init_once(LINVFS_GET_IP(vp));
+}
+
+STATIC int
+init_inodecache( void )
+{
+ linvfs_inode_cachep = kmem_cache_create("linvfs_icache",
+ sizeof(vnode_t), 0,
+ SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
+ init_once, NULL);
+
+ if (linvfs_inode_cachep == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+STATIC void
+destroy_inodecache( void )
+{
+ if (kmem_cache_destroy(linvfs_inode_cachep))
+ printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
+}
+
+/*
+ * Attempt to flush the inode, this will actually fail
+ * if the inode is pinned, but we dirty the inode again
+ * at the point when it is unpinned after a log write,
+ * since this is when the inode itself becomes flushable.
+ */
+STATIC void
+linvfs_write_inode(
+ struct inode *inode,
+ int sync)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ int error, flags = FLUSH_INODE;
+
+ if (vp) {
+ vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
+ if (sync)
+ flags |= FLUSH_SYNC;
+ VOP_IFLUSH(vp, flags, error);
+ }
+}
+
+STATIC void
+linvfs_clear_inode(
+ struct inode *inode)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+
+ if (vp) {
+ vn_rele(vp);
+ vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
+ /*
+ * Do all our cleanup, and remove this vnode.
+ */
+ vn_remove(vp);
+ }
+}
+
+
+#define SYNCD_FLAGS (SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR)
+
+STATIC int
+xfssyncd(
+ void *arg)
+{
+ vfs_t *vfsp = (vfs_t *) arg;
+ int error;
+
+ daemonize("xfssyncd");
+
+ vfsp->vfs_sync_task = current;
+ wmb();
+ wake_up(&vfsp->vfs_wait_sync_task);
+
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout((xfs_syncd_centisecs * HZ) / 100);
+ /* swsusp */
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_FREEZE);
+ if (vfsp->vfs_flag & VFS_UMOUNT)
+ break;
+ if (vfsp->vfs_flag & VFS_RDONLY)
+ continue;
+ VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
+
+ vfsp->vfs_sync_seq++;
+ wmb();
+ wake_up(&vfsp->vfs_wait_single_sync_task);
+ }
+
+ vfsp->vfs_sync_task = NULL;
+ wmb();
+ wake_up(&vfsp->vfs_wait_sync_task);
+
+ return 0;
+}
+
+STATIC int
+linvfs_start_syncd(
+ vfs_t *vfsp)
+{
+ int pid;
+
+ pid = kernel_thread(xfssyncd, (void *) vfsp,
+ CLONE_VM | CLONE_FS | CLONE_FILES);
+ if (pid < 0)
+ return -pid;
+ wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
+ return 0;
+}
+
+STATIC void
+linvfs_stop_syncd(
+ vfs_t *vfsp)
+{
+ vfsp->vfs_flag |= VFS_UMOUNT;
+ wmb();
+
+ wake_up_process(vfsp->vfs_sync_task);
+ wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
+}
+
+STATIC void
+linvfs_put_super(
+ struct super_block *sb)
+{
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ linvfs_stop_syncd(vfsp);
+ VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
+ if (!error)
+ VFS_UNMOUNT(vfsp, 0, NULL, error);
+ if (error) {
+ printk("XFS unmount got error %d\n", error);
+ printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
+ return;
+ }
+
+ vfs_deallocate(vfsp);
+}
+
+STATIC void
+linvfs_write_super(
+ struct super_block *sb)
+{
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ if (sb->s_flags & MS_RDONLY) {
+ sb->s_dirt = 0; /* paranoia */
+ return;
+ }
+ /* Push the log and superblock a little */
+ VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
+ sb->s_dirt = 0;
+}
+
+STATIC int
+linvfs_sync_super(
+ struct super_block *sb,
+ int wait)
+{
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+ int flags = SYNC_FSDATA;
+
+ if (wait)
+ flags |= SYNC_WAIT;
+
+ VFS_SYNC(vfsp, flags, NULL, error);
+ sb->s_dirt = 0;
+
+ if (unlikely(laptop_mode)) {
+ int prev_sync_seq = vfsp->vfs_sync_seq;
+ /*
+ * The disk must be active because we're syncing.
+ * We schedule syncd now (now that the disk is
+ * active) instead of later (when it might not be).
+ */
+ wake_up_process(vfsp->vfs_sync_task);
+ /*
+ * We have to wait for the sync iteration to complete.
+ * If we don't, the disk activity caused by the sync
+ * will come after the sync is completed, and that
+ * triggers another sync from laptop mode.
+ */
+ wait_event(vfsp->vfs_wait_single_sync_task,
+ vfsp->vfs_sync_seq != prev_sync_seq);
+ }
+
+ return -error;
+}
+
+STATIC int
+linvfs_statfs(
+ struct super_block *sb,
+ struct kstatfs *statp)
+{
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ VFS_STATVFS(vfsp, statp, NULL, error);
+ return -error;
+}
+
+STATIC int
+linvfs_remount(
+ struct super_block *sb,
+ int *flags,
+ char *options)
+{
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ struct xfs_mount_args *args = xfs_args_allocate(sb);
+ int error;
+
+ VFS_PARSEARGS(vfsp, options, args, 1, error);
+ if (!error)
+ VFS_MNTUPDATE(vfsp, flags, args, error);
+ kmem_free(args, sizeof(*args));
+ return -error;
+}
+
+STATIC void
+linvfs_freeze_fs(
+ struct super_block *sb)
+{
+ VFS_FREEZE(LINVFS_GET_VFS(sb));
+}
+
+STATIC struct dentry *
+linvfs_get_parent(
+ struct dentry *child)
+{
+ int error;
+ vnode_t *vp, *cvp;
+ struct dentry *parent;
+ struct inode *ip = NULL;
+ struct dentry dotdot;
+
+ dotdot.d_name.name = "..";
+ dotdot.d_name.len = 2;
+ dotdot.d_inode = 0;
+
+ cvp = NULL;
+ vp = LINVFS_GET_VP(child->d_inode);
+ VOP_LOOKUP(vp, &dotdot, &cvp, 0, NULL, NULL, error);
+
+ if (!error) {
+ ASSERT(cvp);
+ ip = LINVFS_GET_IP(cvp);
+ if (!ip) {
+ VN_RELE(cvp);
+ return ERR_PTR(-EACCES);
+ }
+ }
+ if (error)
+ return ERR_PTR(-error);
+ parent = d_alloc_anon(ip);
+ if (!parent) {
+ VN_RELE(cvp);
+ parent = ERR_PTR(-ENOMEM);
+ }
+ return parent;
+}
+
+STATIC struct dentry *
+linvfs_get_dentry(
+ struct super_block *sb,
+ void *data)
+{
+ vnode_t *vp;
+ struct inode *inode;
+ struct dentry *result;
+ xfs_fid2_t xfid;
+ vfs_t *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ xfid.fid_len = sizeof(xfs_fid2_t) - sizeof(xfid.fid_len);
+ xfid.fid_pad = 0;
+ xfid.fid_gen = ((__u32 *)data)[1];
+ xfid.fid_ino = ((__u32 *)data)[0];
+
+ VFS_VGET(vfsp, &vp, (fid_t *)&xfid, error);
+ if (error || vp == NULL)
+ return ERR_PTR(-ESTALE) ;
+
+ inode = LINVFS_GET_IP(vp);
+ result = d_alloc_anon(inode);
+ if (!result) {
+ iput(inode);
+ return ERR_PTR(-ENOMEM);
+ }
+ return result;
+}
+
+STATIC int
+linvfs_show_options(
+ struct seq_file *m,
+ struct vfsmount *mnt)
+{
+ struct vfs *vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
+ int error;
+
+ VFS_SHOWARGS(vfsp, m, error);
+ return error;
+}
+
+STATIC int
+linvfs_getxstate(
+ struct super_block *sb,
+ struct fs_quota_stat *fqs)
+{
+ struct vfs *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
+ return -error;
+}
+
+STATIC int
+linvfs_setxstate(
+ struct super_block *sb,
+ unsigned int flags,
+ int op)
+{
+ struct vfs *vfsp = LINVFS_GET_VFS(sb);
+ int error;
+
+ VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
+ return -error;
+}
+
+STATIC int
+linvfs_getxquota(
+ struct super_block *sb,
+ int type,
+ qid_t id,
+ struct fs_disk_quota *fdq)
+{
+ struct vfs *vfsp = LINVFS_GET_VFS(sb);
+ int error, getmode;
+
+ getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
+ VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
+ return -error;
+}
+
+STATIC int
+linvfs_setxquota(
+ struct super_block *sb,
+ int type,
+ qid_t id,
+ struct fs_disk_quota *fdq)
+{
+ struct vfs *vfsp = LINVFS_GET_VFS(sb);
+ int error, setmode;
+
+ setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
+ VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
+ return -error;
+}
+
+STATIC int
+linvfs_fill_super(
+ struct super_block *sb,
+ void *data,
+ int silent)
+{
+ vnode_t *rootvp;
+ struct vfs *vfsp = vfs_allocate();
+ struct xfs_mount_args *args = xfs_args_allocate(sb);
+ struct kstatfs statvfs;
+ int error, error2;
+
+ vfsp->vfs_super = sb;
+ LINVFS_SET_VFS(sb, vfsp);
+ if (sb->s_flags & MS_RDONLY)
+ vfsp->vfs_flag |= VFS_RDONLY;
+ bhv_insert_all_vfsops(vfsp);
+
+ VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
+ if (error) {
+ bhv_remove_all_vfsops(vfsp, 1);
+ goto fail_vfsop;
+ }
+
+ sb_min_blocksize(sb, BBSIZE);
+ sb->s_export_op = &linvfs_export_ops;
+ sb->s_qcop = &linvfs_qops;
+ sb->s_op = &linvfs_sops;
+
+ VFS_MOUNT(vfsp, args, NULL, error);
+ if (error) {
+ bhv_remove_all_vfsops(vfsp, 1);
+ goto fail_vfsop;
+ }
+
+ VFS_STATVFS(vfsp, &statvfs, NULL, error);
+ if (error)
+ goto fail_unmount;
+
+ sb->s_dirt = 1;
+ sb->s_magic = statvfs.f_type;
+ sb->s_blocksize = statvfs.f_bsize;
+ sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
+ sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
+ set_posix_acl_flag(sb);
+
+ VFS_ROOT(vfsp, &rootvp, error);
+ if (error)
+ goto fail_unmount;
+
+ sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
+ if (!sb->s_root) {
+ error = ENOMEM;
+ goto fail_vnrele;
+ }
+ if (is_bad_inode(sb->s_root->d_inode)) {
+ error = EINVAL;
+ goto fail_vnrele;
+ }
+ if ((error = linvfs_start_syncd(vfsp)))
+ goto fail_vnrele;
+ vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
+
+ kmem_free(args, sizeof(*args));
+ return 0;
+
+fail_vnrele:
+ if (sb->s_root) {
+ dput(sb->s_root);
+ sb->s_root = NULL;
+ } else {
+ VN_RELE(rootvp);
+ }
+
+fail_unmount:
+ VFS_UNMOUNT(vfsp, 0, NULL, error2);
+
+fail_vfsop:
+ vfs_deallocate(vfsp);
+ kmem_free(args, sizeof(*args));
+ return -error;
+}
+
+STATIC struct super_block *
+linvfs_get_sb(
+ struct file_system_type *fs_type,
+ int flags,
+ const char *dev_name,
+ void *data)
+{
+ return get_sb_bdev(fs_type, flags, dev_name, data, linvfs_fill_super);
+}
+
+
+STATIC struct export_operations linvfs_export_ops = {
+ .get_parent = linvfs_get_parent,
+ .get_dentry = linvfs_get_dentry,
+};
+
+STATIC struct super_operations linvfs_sops = {
+ .alloc_inode = linvfs_alloc_inode,
+ .destroy_inode = linvfs_destroy_inode,
+ .write_inode = linvfs_write_inode,
+ .clear_inode = linvfs_clear_inode,
+ .put_super = linvfs_put_super,
+ .write_super = linvfs_write_super,
+ .sync_fs = linvfs_sync_super,
+ .write_super_lockfs = linvfs_freeze_fs,
+ .statfs = linvfs_statfs,
+ .remount_fs = linvfs_remount,
+ .show_options = linvfs_show_options,
+};
+
+STATIC struct quotactl_ops linvfs_qops = {
+ .get_xstate = linvfs_getxstate,
+ .set_xstate = linvfs_setxstate,
+ .get_xquota = linvfs_getxquota,
+ .set_xquota = linvfs_setxquota,
+};
+
+STATIC struct file_system_type xfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "xfs",
+ .get_sb = linvfs_get_sb,
+ .kill_sb = kill_block_super,
+ .fs_flags = FS_REQUIRES_DEV,
+};
+
+
+STATIC int __init
+init_xfs_fs( void )
+{
+ int error;
+ struct sysinfo si;
+ static char message[] __initdata = KERN_INFO \
+ XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
+
+ printk(message);
+
+ si_meminfo(&si);
+ xfs_physmem = si.totalram;
+
+ ktrace_init(64);
+
+ error = init_inodecache();
+ if (error < 0)
+ goto undo_inodecache;
+
+ error = pagebuf_init();
+ if (error < 0)
+ goto undo_pagebuf;
+
+ vn_init();
+ xfs_init();
+ uuid_init();
+ vfs_initdmapi();
+ vfs_initquota();
+
+ error = register_filesystem(&xfs_fs_type);
+ if (error)
+ goto undo_register;
+ return 0;
+
+undo_register:
+ pagebuf_terminate();
+
+undo_pagebuf:
+ destroy_inodecache();
+
+undo_inodecache:
+ return error;
+}
+
+STATIC void __exit
+exit_xfs_fs( void )
+{
+ vfs_exitquota();
+ vfs_exitdmapi();
+ unregister_filesystem(&xfs_fs_type);
+ xfs_cleanup();
+ pagebuf_terminate();
+ destroy_inodecache();
+ ktrace_uninit();
+}
+
+module_init(init_xfs_fs);
+module_exit(exit_xfs_fs);
+
+MODULE_AUTHOR("Silicon Graphics, Inc.");
+MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
+MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff